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https://github.com/intel/compute-runtime.git
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Reorganization directory structure [4/n]
Change-Id: Ib868ed62d12ea8f9f123644219ba299e86a658ac
This commit is contained in:
kamdiedrich
281
shared/test/unit_test/helpers/aligned_memory_tests.cpp
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281
shared/test/unit_test/helpers/aligned_memory_tests.cpp
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/*
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* Copyright (C) 2017-2020 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "shared/source/helpers/aligned_memory.h"
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#include "gtest/gtest.h"
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#include <cstdint>
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TEST(AlignedFree, nullptrShouldntCrash) {
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alignedFree(nullptr);
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}
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void *ptrAlignedToPage = (void *)0x1000;
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void *ptrNotAlignedToPage = (void *)0x1001;
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struct AlignedMalloc : public ::testing::TestWithParam<size_t> {
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public:
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void SetUp() override {
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ptr = nullptr;
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alignAlloc = GetParam();
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}
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void TearDown() override {
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alignedFree(ptr);
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}
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void *ptr;
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size_t alignAlloc;
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};
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TEST_P(AlignedMalloc, size0) {
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size_t sizeAlloc = 0;
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ptr = alignedMalloc(sizeAlloc, alignAlloc);
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EXPECT_NE(nullptr, ptr);
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EXPECT_EQ(0u, (uintptr_t)ptr % alignAlloc);
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}
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TEST_P(AlignedMalloc, size4096) {
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size_t sizeAlloc = 4096;
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ptr = alignedMalloc(sizeAlloc, alignAlloc);
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EXPECT_NE(nullptr, ptr);
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EXPECT_EQ(0u, (uintptr_t)ptr % alignAlloc);
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}
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TEST(AlignedMallocTests, size0align4096) {
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size_t sizeAlloc = 0;
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auto ptr = alignedMalloc(sizeAlloc, 4096);
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EXPECT_NE(nullptr, ptr);
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EXPECT_EQ(0u, (uintptr_t)ptr % 4096);
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alignedFree(ptr);
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}
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INSTANTIATE_TEST_CASE_P(
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AlignedMallocParameterized,
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AlignedMalloc,
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testing::Values(
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1,
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4,
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8,
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64,
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4096));
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struct AlignUp : public ::testing::TestWithParam<size_t> {
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};
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TEST_P(AlignUp, belowAlignmentBefore) {
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uintptr_t addrBefore = 0x1fffffff;
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auto ptrBefore = (uint32_t *)addrBefore;
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auto alignment = GetParam();
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auto ptrAfter = alignUp(ptrBefore, alignment);
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auto addrAfter = (uintptr_t)ptrAfter;
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EXPECT_EQ(0u, addrAfter % alignment);
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}
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TEST_P(AlignUp, AtAlignmentBefore) {
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uintptr_t addrBefore = 0x20000000;
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auto ptrBefore = (uint32_t *)addrBefore;
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auto alignment = GetParam();
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auto ptrAfter = alignUp(ptrBefore, alignment);
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auto addrAfter = (uintptr_t)ptrAfter;
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EXPECT_EQ(0u, addrAfter % alignment);
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}
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TEST_P(AlignUp, AboveAlignmentBefore) {
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uintptr_t addrBefore = 0x20000001;
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auto ptrBefore = (uint32_t *)addrBefore;
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auto alignment = GetParam();
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auto ptrAfter = alignUp(ptrBefore, alignment);
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auto addrAfter = (uintptr_t)ptrAfter;
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EXPECT_EQ(0u, addrAfter % alignment);
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}
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TEST_P(AlignUp, preserve64Bit) {
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uint64_t aligned = 1ULL << 48;
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auto alignment = GetParam();
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auto result = alignUp(aligned, alignment);
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EXPECT_EQ(aligned, result);
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}
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INSTANTIATE_TEST_CASE_P(
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AlignUpParameterized,
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AlignUp,
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testing::Values(
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1,
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4,
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8,
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32,
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64,
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256,
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4096));
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TEST(AlignWholeSize, alignWholeSizeToPage) {
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int size = 1;
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auto retSize = alignSizeWholePage(ptrAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u);
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}
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TEST(AlignWholeSize, sizeGreaterThenPageResultsIn2Pages) {
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int size = 4097;
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auto retSize = alignSizeWholePage(ptrAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u * 2);
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}
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TEST(AlignWholeSize, allocationNotPageAligned) {
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int size = 4097;
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auto retSize = alignSizeWholePage(ptrNotAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u * 2);
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}
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TEST(AlignWholeSize, ptrNotAligned) {
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int size = 1;
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auto retSize = alignSizeWholePage(ptrNotAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u);
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}
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TEST(AlignWholeSize, allocationFitsToOnePage) {
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int size = 4095;
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auto retSize = alignSizeWholePage(ptrNotAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u);
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}
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TEST(AlignWholeSize, allocationFitsTo2Pages) {
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int size = 4095 + 4096;
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auto retSize = alignSizeWholePage(ptrNotAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u * 2);
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}
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TEST(AlignWholeSize, allocationOverlapsToAnotherPage) {
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int size = 4096;
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auto retSize = alignSizeWholePage(ptrNotAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u * 2);
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}
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TEST(AlignWholeSize, allocationOverlapsTo2AnotherPage) {
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int size = 4096 * 2;
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auto retSize = alignSizeWholePage(ptrNotAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u * 3);
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}
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TEST(AlignWholeSize, ptrProperlyAlignedTo2Pages) {
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int size = 4096 * 2;
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auto retSize = alignSizeWholePage(ptrAlignedToPage, size);
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EXPECT_EQ(retSize, 4096u * 2);
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}
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TEST(AlignDown, ptrAlignedToPageWhenAlignedDownReturnsTheSamePointer) {
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void *ptr = (void *)0x1000;
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auto alignedDownPtr = alignDown(ptr, MemoryConstants::pageSize);
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EXPECT_EQ(ptr, alignedDownPtr);
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}
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TEST(AlignDown, ptrNotAlignedToPageWhenAlignedDownReturnsPageAlignedPointer) {
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void *ptr = (void *)0x1001;
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void *expected_ptr = (void *)0x1000;
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auto alignedDownPtr = alignDown(ptr, MemoryConstants::pageSize);
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EXPECT_EQ(expected_ptr, alignedDownPtr);
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}
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TEST(AlignDown, ptrNotAlignedToPage2WhenAlignedDownReturnsPageAlignedPointer) {
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void *ptr = (void *)0x1241;
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void *expected_ptr = (void *)0x1000;
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auto alignedDownPtr = alignDown(ptr, MemoryConstants::pageSize);
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EXPECT_EQ(expected_ptr, alignedDownPtr);
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}
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TEST(AlignDown, ptrNotAlignedToPage3WhenAlignedDownReturnsPageAlignedPointer) {
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void *ptr = (void *)0x3241;
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void *expected_ptr = (void *)0x3000;
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auto alignedDownPtr = alignDown(ptr, MemoryConstants::pageSize);
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EXPECT_EQ(expected_ptr, alignedDownPtr);
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}
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TEST(AlignDown, ptrNotAlignedToDwordWhenAlignedDownReturnsDwordAlignedPointer) {
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void *ptr = (void *)0x3241;
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void *expected_ptr = (void *)0x3240;
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auto alignedDownPtr = alignDown(ptr, 4);
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EXPECT_EQ(expected_ptr, alignedDownPtr);
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}
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TEST(AlignDown, preserve64Bit) {
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uint64_t aligned = 1ULL << 48;
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auto result = alignDown(aligned, MemoryConstants::pageSize);
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EXPECT_EQ(aligned, result);
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}
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TEST(DLLbitness, Given32or64BitLibraryWhenAskedIfItIs32BitThenProperValueIsReturned) {
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auto pointerSize = sizeof(void *);
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if (pointerSize == 8) {
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EXPECT_FALSE(is32bit);
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EXPECT_TRUE(is64bit);
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} else if (pointerSize == 4) {
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EXPECT_TRUE(is32bit);
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EXPECT_FALSE(is64bit);
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} else {
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FAIL() << "unrecognized bitness";
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}
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auto pointerSizeFromSizeT = sizeof(size_t);
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if (pointerSizeFromSizeT == 8) {
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EXPECT_FALSE(is32bit);
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EXPECT_TRUE(is64bit);
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} else if (pointerSizeFromSizeT == 4) {
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EXPECT_TRUE(is32bit);
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EXPECT_FALSE(is64bit);
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} else {
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FAIL() << "unrecognized bitness";
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}
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}
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template <typename T>
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class IsAlignedTests : public ::testing::Test {
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};
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typedef ::testing::Types<int8_t, uint8_t, int16_t, uint16_t, int32_t, uint32_t, int64_t, uint64_t, float, double> IsAlignedTypes;
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TYPED_TEST_CASE(IsAlignedTests, IsAlignedTypes);
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TYPED_TEST(IsAlignedTests, aligned) {
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TypeParam *ptr = reinterpret_cast<TypeParam *>(static_cast<uintptr_t>(0xdeadbeefu));
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// one byte alignment should always return true
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if (alignof(TypeParam) == 1)
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EXPECT_TRUE(isAligned(ptr));
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else
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EXPECT_FALSE(isAligned(ptr));
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auto ptr1 = reinterpret_cast<TypeParam *>(reinterpret_cast<uintptr_t>(ptr) & ~(alignof(TypeParam) - 1));
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EXPECT_TRUE(isAligned(ptr1));
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auto ptr2 = reinterpret_cast<TypeParam *>(reinterpret_cast<uintptr_t>(ptr) & ~((alignof(TypeParam) << 1) - 1));
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EXPECT_TRUE(isAligned(ptr2));
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// this is hard to align in the middle of byte aligned types
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if (alignof(TypeParam) == 1)
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return;
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auto ptr3 = reinterpret_cast<TypeParam *>(reinterpret_cast<uintptr_t>(ptr) & ~((alignof(TypeParam) >> 1) - 1));
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EXPECT_FALSE(isAligned(ptr3));
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}
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TEST(IsAligned, nonPointerType) {
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EXPECT_TRUE(isAligned<3>(0));
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EXPECT_FALSE(isAligned<3>(1));
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EXPECT_FALSE(isAligned<3>(2));
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EXPECT_TRUE(isAligned<3>(3));
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EXPECT_FALSE(isAligned<3>(4));
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EXPECT_FALSE(isAligned<3>(5));
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EXPECT_TRUE(isAligned<3>(6));
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}
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TEST(IsAligned, supportsConstexprEvaluation) {
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static_assert(false == isAligned<3>(2), "");
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static_assert(true == isAligned<3>(3), "");
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}
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